Coptic Orthodox Christians mourn their relatives who died in clashes between Muslims and Christians in El Khusus, north of the Egyptian capital, during their funeral at the main cathedral in Cairo, on April 7, 2013.

The grim specter of sectarian violence hovers once more over Egypt after a weekend of deadly riots involving Egyptian Copts in Cairo, which followed the funerals of Copts killed in clashes with Muslims in a town north of the capital on Friday.